package com.atguigu.cloud.config;

import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.cloud.loadbalancer.annotation.LoadBalancerClient;
import org.springframework.cloud.loadbalancer.core.RandomLoadBalancer;
import org.springframework.cloud.loadbalancer.core.ReactorLoadBalancer;
import org.springframework.cloud.loadbalancer.core.ServiceInstanceListSupplier;
import org.springframework.cloud.loadbalancer.support.LoadBalancerClientFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;
import org.springframework.web.client.RestTemplate;

/**
 * @author ViGrayThorn
 * @since 1.0.0
 * date 2025-09-02 08:51:01
 */
@Configuration
@LoadBalancerClient(
		//下面的value值大小写一定要和consul里面的名字一样，必须一样
		value = "cloud-payment-service", configuration = RestTemplateConfig.class)
public class RestTemplateConfig {
	@Bean
	@LoadBalanced //使用@LoadBalanced注解赋予RestTemplate负载均衡的能力
	public RestTemplate restTemplate() {
		return new RestTemplate();
	}

	@Bean
	ReactorLoadBalancer<ServiceInstance> randomLoadBalancer(Environment environment,
	                                                        LoadBalancerClientFactory loadBalancerClientFactory) {
		String name = environment.getProperty(LoadBalancerClientFactory.PROPERTY_NAME);

		return new RandomLoadBalancer(loadBalancerClientFactory.getLazyProvider(name, ServiceInstanceListSupplier.class), name);
	}
}

